chore(ci): improve workflows

[luc122c]

Description

Hi, there are a few improvements that can be made to the workflows.

ubuntu-slim runner

Use ubuntu-slim for close-cant-reproduce-issues.yml, lock-closed-issues.yml, ecosystem-ci-trigger.yml, and size-report.yml. The runner readme provides more info about the tools and the blog post gives some potential use cases.

persist-credentials: false

Use persist-credentials: false on every actions/checkout (none of the jobs perform subsequent git operations — pnpm release --publishOnly in release.yml doesn't touch git). See usage for more info.

parallel keyword

Use parallel for independent steps in test.yml and size-report.yml

GitHub Actions announced the parallel keyword — syntactic sugar that groups independent steps to run concurrently within a single job, then waits for all of them before continuing. See the workflow syntax docs for the full reference.

Concurrency

Add concurrency to the PR-triggered workflows so a new push cancels the previous in-flight run of the same workflow. ci.yml and size-data.yml use the || github.ref fallback to keep per-branch grouping for push events, while still cancelling on PRs.

Related

• chore: improve actions nuxt/.github#41
• chore: improve actions #2 nuxt/.github#42
• ci: improve actions workflows nitrojs/nitro#4388
• ci: use parallel keyword for concurrent workflow steps nuxt/nuxt#35448

Summary by CodeRabbit

• Bug Fixes

  • Improved reliability of CI and automated workflows by preventing overlapping runs on the same pull request.
  • Reduced the chance of checkout-related credential issues during automated jobs.

• Chores

  • Updated several automation jobs to use a lighter runner image.
  • Ran some validation steps in parallel, which may help shorten check times.

[coderabbitai]

📝 Walkthrough

Walkthrough

GitHub Actions workflows are updated across the repository to add concurrency policies with cancel-in-progress for pull requests, set persist-credentials: false on checkout steps, switch some jobs from ubuntu-latest to ubuntu-slim, and parallelize previously sequential steps in test and size-report workflows.

Changes

CI Workflow Updates

Layer / File(s)	Summary
Concurrency and checkout hardening .github/workflows/autofix.yml, .github/workflows/ci.yml, .github/workflows/size-data.yml, .github/workflows/release.yml, .github/workflows/test.yml	Adds workflow-level concurrency groups keyed by workflow name plus PR number/ref with cancel-in-progress for pull_request events, and sets persist-credentials: false on actions/checkout steps across multiple jobs.
Runner image migration .github/workflows/close-cant-reproduce-issues.yml, .github/workflows/ecosystem-ci-trigger.yml, .github/workflows/lock-closed-issues.yml, .github/workflows/size-report.yml	Changes runs-on from ubuntu-latest to ubuntu-slim for several scheduled/triggered jobs.
Parallelized step execution .github/workflows/size-report.yml, .github/workflows/test.yml	Restructures sequential steps (reading PR number/base branch, compiler/ssr unit tests, lint/format-check) into parallel blocks so they run concurrently.

Estimated code review effort: 2 (Simple) | ~10 minutes

Suggested reviewers: danielroe

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❓ Inconclusive	The title is related to the workflow changes, but it is too generic to convey the main CI updates.	Use a more specific title such as "chore(ci): update GitHub Actions workflows" or mention the key changes like concurrency and ubuntu-slim.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[github-actions]

Size Report

Bundles

File	Size	Gzip	Brotli
runtime-dom.global.prod.js	107 kB	40.3 kB	36.2 kB
vue.global.prod.js	165 kB	60.3 kB	53.7 kB

Usages

Name	Size	Gzip	Brotli
createApp (CAPI only)	49 kB	19 kB	17.4 kB
createApp	57.1 kB	22.1 kB	20.2 kB
createSSRApp	61.6 kB	23.9 kB	21.8 kB
defineCustomElement	63.3 kB	24 kB	21.9 kB
overall	71.9 kB	27.5 kB	25.1 kB

[pkg-pr-new]

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commit: 5d15983